Abstract: This paper analyzes the teaching status and deficiencies of “operations research” for postgraduates, and designs a hierarchical teaching mode from four aspects: teaching objects, teaching objectives, teaching contents and examination standards. On this basis, it organizes and implements the case teaching of “operations research”. The teaching mode of “operational research” course combined with hierarchical teaching and case teaching is not only helpful to cultivate students' independent learning ability and independent innovation ability, but also helpful to promote teachers to efficiently complete the teaching objectives.

Key words: Operations research, Hierarchical teaching, Case teaching